create-gojs-kit
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A CLI for downloading GoJS samples, extensions, and docs
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<meta name="description" content="The JavaScript class hierarchy defined by the GoJS library, arranged as a tree." />
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<title>
Class Hierarchy Diagram Showing All GoJS Classes | GoJS Diagramming Library
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<body>
<!-- This top nav is not part of the sample code -->
<nav id="navTop" class=" w-full h-[var(--topnav-h)] z-30 bg-white border-b border-b-gray-200">
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GoJS
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<script>
window.addEventListener("DOMContentLoaded", function () {
// topnav
var topButton = document.getElementById("topnavButton");
var topnavList = document.getElementById("topnavList");
if (topButton && topnavList) {
topButton.addEventListener("click", function (e) {
topnavList
.classList
.toggle("hidden");
e.stopPropagation();
});
document.addEventListener("click", function (e) {
// if the clicked element isn't the list, close the list
if (!topnavList.classList.contains("hidden") && !e.target.closest("#topnavList")) {
topButton.click();
}
});
// set active <a> element
var url = window
.location
.href
.toLowerCase();
var aTags = topnavList.getElementsByTagName('a');
for (var i = 0; i < aTags.length; i++) {
var lowerhref = aTags[i]
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if (lowerhref.endsWith('.html'))
lowerhref = lowerhref.slice(0, -5);
if (url.startsWith(lowerhref)) {
aTags[i]
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break;
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<div class="flex flex-col prose">
<div class="w-full max-w-screen-xl mx-auto">
<!-- * * * * * * * * * * * * * -->
<!-- Start of GoJS sample code -->
<script src="https://cdn.jsdelivr.net/npm/gojs@3.1.0"></script>
<div id="allSampleContent" class="p-4 w-full">
<script src="../extensions/HyperlinkText.js"></script>
<script id="code">
function init() {
var diagram = new go.Diagram('myDiagramDiv', {
// Automatically lay out the diagram as a tree;
// separate trees are arranged vertically above each other.
layout: new go.TreeLayout({ nodeSpacing: 3 })
});
// Define a node template showing class names.
// Clicking on the node opens up the documentation for that class.
diagram.nodeTemplate =
new go.Node("Auto")
.add(
// define the visuals for the hyperlink, basically the whole node:
new go.Shape({ fill: '#1F4963', stroke: null }),
go.GraphObject.build('HyperlinkText', {
font: 'bold 13px Helvetica, bold Arial, sans-serif',
stroke: 'white',
margin: 3
},
// compute the URL to open for the documentation
node => '../api/symbols/' + node.data.key + '.html', node => node.data.key
)
);
// Define a trivial link template with no arrowhead
diagram.linkTemplate =
new go.Link({ corner: 10 })
.add(new go.Shape({ strokeWidth: 1.5 })); // the link shape, with the default black stroke
// Collect all of the data for the model of the class hierarchy
var nodeDataArray = [];
// Iterate over all of the classes in "go"
for (const k in go) {
var cls = go[k];
// ignore enums and other stuff
if (typeof cls !== 'function') continue;
// find base class constructor
const base = Object.getPrototypeOf(cls);
if (base === Object) {
// "root" node?
nodeDataArray.push({ key: k });
} else if (typeof base === 'function') {
// add a node for this class and a tree-parent reference to the base class name
nodeDataArray.push({ key: k, parent: base.name });
}
}
// Create the model for the hierarchy diagram
diagram.model = new go.TreeModel(nodeDataArray);
// Now collect all node data that are singletons
var singlesArray = []; // for classes that don't inherit from another class
diagram.nodes.each(node => {
if (node.linksConnected.count === 0) {
singlesArray.push(node.data);
}
});
// Remove the unconnected class nodes from the main Diagram
diagram.model.removeNodeDataCollection(singlesArray);
// Display the unconnected classes in a separate Diagram
var singletons = new go.Diagram('mySingletons', {
nodeTemplate: diagram.nodeTemplate, // share the node template with the main Diagram
layout: new go.GridLayout({
wrappingColumn: 1, // put the unconnected nodes in a column
spacing: new go.Size(3, 3)
}),
model: new go.Model(singlesArray) // use a separate model
});
}
window.addEventListener('DOMContentLoaded', init);
</script>
<div id="sample">
<div style="width: 100%; display: flex; justify-content: space-between">
<div id="myDiagramDiv" style="flex-grow: 1; height: 725px; margin-right: 4px; border: solid 1px black"></div>
<div id="mySingletons" style="width: 160px; background-color: whitesmoke; border: solid 1px black"></div>
</div>
<p>
The JavaScript class hierarchy defined by the GoJS library, laid out by a <a>TreeLayout</a>. Classes that do not have any inheritance relationship are shown
at the right.
</p>
<p>Because the node template uses a "HyperlinkText", clicking on a node will open the API reference for that class in a new window.</p>
<p>For more uses of the Tree Layout, see the <a href="DOMTree.html">DOM Tree</a> and <a href="visualTree.html">Visual Tree</a> samples.</p>
</div>
</div>
<!-- * * * * * * * * * * * * * -->
<!-- End of GoJS sample code -->
</div>
<div id="allTagDescriptions" class="p-4 w-full max-w-screen-xl mx-auto">
<hr/>
<h3 class="text-xl">GoJS Features in this sample</h3>
<!-- blacklist tags that do not correspond to a specific GoJS feature -->
<h4>Tree Layout</h4>
<p>
This predefined layout is used for placing Nodes of a tree-structured graph in layers (rows or columns).
For discussion and examples of the most commonly used properties of the <a href="../api/symbols/TreeLayout.html">TreeLayout</a>,
see the <a href="../intro/trees.html">Trees</a> page in the Introduction.
More information can be found in the <a href="../intro/layouts.html#TreeLayout">GoJS Intro</a>.
</p>
<p>
<a href="../samples/index.html#treelayout">Related samples</a>
</p>
<hr>
</div>
</div>
</body>
<!-- This script is part of the gojs.net website, and is not needed to run the sample -->
<script src="../assets/js/goSamples.js"></script>
</html>